To say "Happy Rosh Hashanah," the most common Hebrew greeting is "Shanah Tovah" (שנה טובה), which literally means "Good Year." A longer and sweeter version is "L’Shanah Tovah Umetukah" (לשנה טובה ומתוקה), meaning "For a good and sweet year." Both greetings are widely used around the holiday. Other variations include:

• "Ketivah Vachatimah Tovah" (כתיבה וחתימה טובה), meaning "A good inscription and sealing," used before Yom Kippur.
• "Tizku Leshanim Rabot" (תזכו לשנים רבות), meaning "May you merit many years," common among Sephardic and Mizrahi Jews.
• "Chag Sameach" (חג שמח), meaning "Happy Holiday," can also be used during Rosh Hashanah.

The simplest and most traditional greeting to say is "Shanah Tovah," equivalent to "Happy New Year" in English and warmly appropriate for Rosh Hashanah wishes.